public class Program
  {
    [DllImport("psapi.dll")]
    static extern int EmptyWorkingSet(IntPtr hwProc); //清理内存相关
   static void Main()
    {
      //启动定时清理内存
      SetTimer();
    }
       /// <summary>
    /// 定时清理内存
    /// </summary>
    private static void SetTimer()
    {
      System.Timers.Timer aTimer = new System.Timers.Timer(); //初始化定时器
      aTimer.Interval = 60000;//配置时间1分钟
      aTimer.Elapsed += new System.Timers.ElapsedEventHandler(OnTimedEvent);
      aTimer.AutoReset = true;//每到指定时间Elapsed事件是到时间就触发
      aTimer.Enabled = true; //指示 Timer 是否应引发 Elapsed 事件。
    }
//定时器触发的处理事件
private static void OnTimedEvent(Object source, ElapsedEventArgs e)
    {
      //清理内存
      GC.Collect();
      GC.WaitForPendingFinalizers();
      Process[] processes = Process.GetProcesses();
      foreach (Process process in processes)
      {
        //以下系统进程没有权限，所以跳过，防止出错影响效率。 
        if ((process.ProcessName == "System") && (process.ProcessName == "Idle"))
          continue;
        try
        {
          EmptyWorkingSet(process.Handle);
        }
        catch
        {
        }
      }
    }
}